21 discussions on ElectronDepot about the Fairchild 2N3904: what owners asked, what went wrong, and what fixed it.
Whenever I see app notes I have always noted the strange resistorvalues used when a value from the E24 range would do just as well.At the moment I am doing a BOM for a design originating in the US.Again I note the liberal use of odd...
Has anybody done this?-- John Larkin Highland Technology Inc jlarkin at highlandtechnology dot com Precision electronic instrumentationPicosecond-resolution Digital Delay and Pulse generatorsCustom timing and laser...
Hi all, this is mostly a continuation of CD's solar battery charger thread. I was thinking of using a power zener as a shunt reference... but this has some problems. I think #1 is that as the zener sucks up the power it will warm and go...
What are the best options for high quality audio white noisegeneration? I have been using generic diodes and reversed biased transistors. Thensomeone mentioned there are special parts available with bettercharacteristics.Can anyone please...
NPN signal transistors make pretty good low-capacitance signal and MOSFET-gate protection zeners, etc. For example, the emitter-base junction of the common 2N3904 breaks down near 7.25 volts, and has 6 to 7pF of capacitance at 0V,...
I built the simple LED V Boost circuit at except I used a BC338 for Q1 and added a 100 uF across the battery which is really a power supply. I paralleled three LEDs because at higher currents the single LED would overheat. I used a...